Roof, What Gives?

[Tegrey 121]

We are fairly new at roof cleaning. I did one today, using Applesauce. It clean up OK, but I cannot get rid of mold streaks. I don't believe more pressure will help. Certainly not for asphalt roofs. I used the right receipe, temp was about 80 and nice weather. Any suggestion so we can clean roofs clean? Thank You.

[dpaull 80]

Have you tried another application of the applesauce? That seems to be common in some cases.

[Barry M 73]

Almost looks like the algae is dead because it has that cloudy look to it rather than streaks (a before pic would help) but it looks like it just needs rinsed. A few rains would take care of that for you.

If you've already tried rinsing then I'd re-coat the roof with love again. How fresh was your chlorine? I've used chlorine only 1.5 months old that just wouldn't do the job on a roof.

[Tegrey 121]

Here is a before. Stronger chems? Thanks for the replys.

[John Doherty 126]

Reapply to the trouble spots and rinse. Those lighter color roofs seem to be the toughest to clean in one shot.

[James 624]

thats a pretty easy roof to walk on use a little pressure.

[PA Dutchman 14]

With that being walkable...it could/should have had spectacular results.